Fluid pressure water system



P. H. DONOVAN FLUID PRESSURE WATER SYSTEM Filed May -24. 1930 Nov. 29, 1932.

11/4274? 0 I wf l w ATTORNEY INVENTOR PATRICK H. DONOVAN Y B %a@ Patented Nov. 29, 1932 UNITED STATES PATENT OFFICE PATRICK H. DONOVAN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE WESTINGHOUSE. AIR

BRAKE COMPANY, OF WILMERD ING, PENNSYLVANIA, A CORPORATION OF PENN- SYLVAN IA.

Application filed May 24,

This invention relates to fiuid pressure water systems of the type used on railway cars and the like.

An object of the invention is to provide animproved fluid pressure water system for water to the water reservoir.

, Another object of the invention is to'provide a fluid pressure water system of the above type in which an improved manually operated valve-device is provided for cona valve devices are employed, the first combinasimultaneously tion valve device having means for governing the air supply and means for reducing the air pressure and the second combination valve device having means for controlling the air su ply and means for controllin the conduit t rough which water is supplied to the water reservoir, both of said controlling means bein operated from a single shaft, so that when t e air supply control means is operated to cut oil the air supply to the water reservoir, the water sup ly control'means is operate to open the water supply conduit. v

Another object of the invention isto provide an improved fluid pressure water system of the character mentioned which is simple in construction, and reliable and exact in func tion under all conditions of service.

The invention also comprises certain new a and useful improvements in the construction, arrangement, and combination of the several parts of which it is composed, as will be heremafter more fully described and claimed.

In the accompanying drawing; Figure 1 is a dia 'rammatic view, mostly 1n section, of

a fiui pressure water system embodying the a invention; Figil2 is an end view of a portion of the water ling valve operating mechanism, as seen fromthe line 0 Fig. 1;

FLUID PRESSURE WATER SYSTEM 1930. Serial No. 455,411.

and Fig. 3 is a diagrammatic section of a modified form of water filling valve device.

Referring to the drawing, the equipment may comprise a water storage tank or reser- V01! 6, water filhng valve device7, a source of compressed air, such as a reservoir 8,

means for controlling the supply of compressed air from the source of supply tov the water storage tank comprising a governor valve device 9 and a reducing valve device 10, and a second sourceof compressed air, such as a supplemental reservoir 11.

The reservoir, 8 maybe one of the reservoirs of the brake system on the car, such for instance, as the auxiliary reservoir, service reservoir, or emergency reservoir, since either one of these reservoirs is ada ted to be kept supplied with compressed air from an air compressor on one of the vehicles of the train. The reservoir 11 is adapted to be supplied with compressed air from the reservoir 8, and the air in the reservoir 11 is maintained'at substantially the same pres-' sure as is the maximum pressure of the compressed air in the reservoir 8, as long as the 6, when the car is uncoupled from a vehicle having an air compressor, or when the air pressure, in the reservoir 8 fails from any cause, such as a broken train pipe.

Preferably, the governor valve device 9 and the reducing valve device 10 are constructed as a single unit comprising a. casing also provided with a chamber 12, containing a strainer 13 for filtering the air passing through said valve devices.

The chamber 12, on the exterior of the strainer 13 is connected to the reservoir 8, through a pipe 14. A portion of the chamber 12 is reduced so as to snu ly fit the body of the strainer, and above the strainer 13, the casing is formed with a chamber 15. Above the chamber 15, the casing is provided with a-screw-threaded cap or plug 16, so that the strainer 13 can be easily removed for cleaning or replacement.

The governor valve device comprises a zteeuieo reservoir 8, cml this increcse in pressure on till soil valve piston quickly. moves the valve piston into on agement with the geslret 26. I With the valve piston 17 thus seeteoi inits upper position, onunder pressure is permitted to flow from possege 19, through chamber 18 end pest bull cbecl: velve 3%, to velve cburnber til oi the reclucing valve clevice 16, one from thence, through pessege. and pipe it) to the reservoir 11.,

With rlienhragrn chamber 28 of the reducing volve ol evice l6 initislly uncborgeol, the pressure of soaring 35 iefilects the uiepbregm 26 downwnr ly enol the vulve 30 is conseuently unseeteol. Air under pressure is tiereby permittefii to tlow from valve cbember 31 to the wster reservoir 6, by vvsy of unseoted velve. 3B6, olieobrogm cliember 28, pesscge 55, pest tbebsll checlr velve 66, pipe 55, post theunseoted velve st in cbember 50, enol from tbence, tlirougli opening 62, chember 53, encl pipe 5%. I

When the pressure thus supplied to the diaphragm cleember 28 and writer reservoir 6 becomes suficient to over belonce the opposing pressure oi sprin 35 on rliepliregrn 26, ssidl diopliregm 1S rlerlectecl upwerily, permitting spring iii to sect velve 86 cool prevent s further pressure increese in the reservoir 6 encl chamber Q6.

"it should be noted tlrit the sir suppliecl to the supplementel reservoir ll is st snlosten tielly the seine pressure as the pressure oi the sir in reservoir 6. However, should the prefsure of the sir in reservoir 8 be rlecreesed from any csuse, the bell clieclr velve 39 will prevent e corresponoling olecreese in tbe pressure oi the sir in the reservoir ll, so tliet even though the supply or sir from tbs reservoir 5' be cut ofi tlircugti loss in pressure by the verve piston 1?, the pressure oi the our in clirniber 3i will be nininteinecl by tire sir in reservoir H.

The sir unrler pressure supplied through the pipe to tire vvuter reservoir 6 forces the renter through tbe Pipe 'il into the our, where the vvcter is distributes to tire verious fintures.( not shown) When; weter is witbclrevvn from the reservoir 6, the pressure reduces, enol this ceuses e corresponcling reuuction in the pressure in clieniber 28 of the reducing; velve olevice l6, sotliot the cliepiiregm 26 is eletlected diovvnvverdly by the pressure of spring so. This notion unsests volve 36 one thereby permits sir uncles pressure to flow from time velve cbumber 61 to the writer reservoir 6 soul recliorge rein reservoir in the noenner strove described When time supply or? enter in the reservoir 6 is clenleteol, end it is'desirecl to refill the some, the operetor liirts the pawl 66 of the vector filling velvedevice i oncl moves tlie leverto downwsrdlytrom the position strewn in Figs. 1 end 2, to e substentielly verticnl time, the valve 41 uncovers pawl 66 engages the other notch 67 and locks the lever.

The movement of the lever rotates the shaft 61 in a counter clockwise direction, and; the valves 40 and 41 are thereby moved outwardly from their respective seat ribs, compressing the springs 46 and 58 respectively.

in the outward movement of the valve 41, the valve 49 attached thereto by the stem 51, is move& into engagement with the seat I rib 69, thereby cutting 06 the supply of compressed sir to the reservoir 6, At the some the vent port 48, so that the compressed air in the reservoir 6 is vente to the atmosphere With the valve 40 unseuted from the seat rib 45, e communication is established In lieu of the type of weter filling vclvc evice 2 shown in Fig. 1, unother type of valve clevice may be utilizerl, such tor in stance es the tyge shown in Fig. 3, in which n bell check vs, vs 72 is provided. in this form of the invention oloereting mechanism is only requires for controlling the sir pres sure controlling valves 41 soul 49, since the bell cbeclr velve '72 is udeptecl to eutometicolly control the communication from the filling neck 4:?) to the alps 44 end prevent buck flow oi the water rom the reservoir 6.

While two illustrative embodiments oi the invention lieve been describel in oleteil, it is not m intention to limit their scope to tbese emsocliments or otherwise than by the terms or? tbe appended cleims,

now etescribeol my invention, wbet ll cleini new snol desire to secure by. llretteis Potent, is:

i. it fluid pressure vveter supply system comprising u weter reservoir, e source of sir unuer pressure, or supplemental sir reservoir, u governor volve levies tor eutomoticelly interrupting communication between seiil source snrl solo weter enol oir reservoirs when the pressure oi the sir 1n seiol source olecreuscs o predetermined smount, u retracing velve oleviee for eutomoticy controlling counicetion between both solo sources onol soil supplemental air reservoir and ssitl weter reservoir, c116 s monually opersble velve d evice for selectively establishing com municution between both sold source oi sir untler pressure oml said supplementol sir reservoir mid voter reservoir, between position in which the projection 68 on the said water reservoir and atmo here and between said water reservoir an a source of water suppl p 2. In a iiilid pressure water supply sys- 5 tem, the combination of two reservoirs normall charged with fluid under pressure, of anot er reservoir containing water and normally subject to the pressure of fluid from said first mention reservoirs, means operab tive upon a reduction in the pressure inthe last mentioned reservoir for supplying fluid under pressure from said first mentioned reservolrs to said last mentioned reservoir, and means subject to the pressure of fluid in one of said first mentioned reservoirs for coni trolling communication between such reservoir and the other of said first mentioned reservoirs.

3. In a fluid pressure water supply sysz'b tem, the combination of a stora e reservoir normally charged with fluid un er pressure and an additional reservoir adapted to be charged from the storage reservoir, of a water reservoir containing water and'nor- Q5 mally subject to the pressure of fluid supplied from said additional reservoir, means operative upon a reduction in the pressure in said water reservoir for supplying fluid under pressure from said additional reservoir'to '30 said water reservoir, and a check valve for controlling communication between said additional reservoir and said storage reservoir and adapted to prevent back flow from the additional reservoir to the stora e reservoir. 35 In testimony whereof I have ereunto set my hand, this 19th day of May, 1930. PATRICK H. DONOVAN. 

